Instruction Syntax

Mnemonic	Format	Flags
tlbie	rB	None

Instruction Encoding

Field	Bits	Description
Primary Opcode	0-5	011111 (0x1F)
Reserved	6-10	00000
Reserved	11-15	00000
rB	16-20	Register containing effective address
Reserved	21-29	000000000
Reserved	30-31	01

Operation

Invalidate TLB entry for the effective address in rB

The tlbie instruction invalidates the Translation Lookaside Buffer (TLB) entry corresponding to the effective address contained in register rB.

Note: The tlbie instruction is used to invalidate specific TLB entries, typically after changes to individual page table entries.

Affected Registers

Translation Lookaside Buffer (TLB)

• TLB entry for the effective address in rB is invalidated

Examples

Basic TLB Entry Invalidation

tlbie r3              # Invalidate TLB entry for address in r3

Memory Management

# After changing a specific page table entry
li r3, page_address   # Load page address
sync                  # Ensure memory operations complete
tlbie r3              # Invalidate TLB entry for this page
sync                  # Ensure TLB invalidation completes

Selective Invalidation

# Invalidate TLB entries for specific memory regions
li r4, region_start   # Load region start address
tlbie r4              # Invalidate TLB entry for region start

Related Instructions

tlbia, tlbsync, sync